Extrusion



FIG. 1 is a perspective view of an extrusion showing my new design, the extrusion being broken away to show indeterminate length;

FIG. 2 is an end elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a left side elevational view thereof. 

The ornamental design for an extrusion, as shown and described. 